Pump.



K. STEINBEGKEIM PUMP.

I APPLICATION FILED JAN. 5, 1912. 1,1 19,657. Patented Dec. 1, 1914.

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m A-m\\\\\\,\\\\l:,..uIg?4 Witnesses: V I r-iven to i Karl Steinbecker:

um'rnn rare A STEINIBECKER, F CHARLOTTENBURG, GERMANY, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW ZQEK.

PUMP.

Speciflcationnf Letters Patent. Pgt t fl @943 1 1914.

Application filed January ji 'tiffi. Serial No. 668,625.

To all whom it may concern:

Be it known that I, KARL Srnmnncnsa, a subject of the King of Prussia, residing at Charlottenburg, Germany, have invented certain new. and useful Improvements in as it is desirable not to interrupt the service tact.

of the pump for any length of'time, a construction is desirable which permits a very rapid interchange ofparts, or the substitution of a new pump in place of the one that is to be inspected. Ordinary pipe couplings are cumbersome and slow to take apart, especially if they are put together sufficiently t-ight'to withstand high pressures. In order to avoid the necessity for disconnecting such couplings, the present invention provides joints which depend simply on surface contact for their tightness, and an improved quick detachable holding means for forcing said surfaces into contact and holding the parts firmly in place.

The invention comprises a pump for high pressures which is mounted in a tapered plug and a fastening or holding means for forcing the tapered plug into a socket of exactly corresponding taper. so that when thus inserted the surfaces of the plug and socket will be in close and fluid-tight c911- In .theplug are formed ports which register with suitable supply and delivery passages in the walls of the socket, so that there is free communication for the fluid to flow to and away from the pump; these ports and passages coming into line as soon as the plug is seated in the socket. The holding or fastening means is arranged, as will be explained more fully hereinafter. so as to act as a lever for forcing the plug into and out of position. The removal of the plug and the insertion of a fresh one containing a pump in good order, is thus a matter of a very short time. so that the service need be interrupted but a few minutes. The apparatus herein described is intended primarily for use in supplying fuel to high compres sion engines and I have illustrated the same as being arranged for such use. Such pumps are required to force fuel against the very high pressures which exist in connection with the operation of this type of engine and accordingly require very tight joints and firm holding means.

In the accompanying drawing, Figure l is a longitudinal section of a pump embodymg my improvements, and Figs. 2 and 3 are cross sections of the same on the lines A-B and CD, respectively.

A suitable stationary member, as for instance an integral tubular cross piece 1, connecting the side walls 2 of a reservoir 3, contains a taperin socket circular in cross section. This reservoir may take any desired form and Will be at all times kept full of fluid as oil in the present instance'from a suitable tank (not shown), which tank will ordinarily be so placed as to keep the reservoir constantly filled by gravity. Such arrangements are well known in connection with this type of engine and further illustration and description thereof is deemed unnecessary. A supply passage 4 connects the interior of the reservoir with said socket, and a delivery passage 5 leads from said socket to a clelivery'pipe 6, which is tightly connected with said passage 5 by a union 7 of well-known construction.

A plug 8 fits snugly into the socket and is provided with a central bore in which is a bushing 9 which is counterbored for a por tion of its length. A pump rod and plunger 10 has a sliding fit in said bushing, being shouldered at 11 to fit the counterbore thereof. The annular space 12 around the plunger above this shoulder constitutes the working or suction chamber of the pump, the shoulder serving as an annular piston. The lower or suction end of this chamber 12 connects by a port 13, Fig. 3, with the inner end of the supply passage 4, being provided with a partially circumferential groove 14 on the outer surface of the plug to enable the port to be registered with the passage without the necessity of great exactness as to the angular position of the plug in the socket. A springseated valve 15 controls the flow of" fluid through the passage 4 and port 13 to the chamber 12, said valve opening inwardly toward said chamber. At the upper end of said chamber a port 16 communicates with the delivery passage 5, by means of a partiallycircumferential groove 17 on the outside of the plug 8, arranged to register with the inner end of said passage when the plug is seated. An outwardly opening springseated valve 18 controls the port 16.

The central bore through the plug is counterbored at its lower end to form a housing for a helical spring '19 which encircles the lower end of the bushing 9 and cam has acted, and effects the suction stroke.

The counterbored portion of the plug may have a lining 23, if desired, to afford a wearing surface and guide for the roller and col lar. This lining may be removably retained in place by an annular cap 2a screwed upon the lower end of the plug.

In order-to hold the plug firmly in its socket and yet to permit of its ready removal when desired, a yoke 25 is provided, one end of which engages with a recess in a lug 26 on the member containing the socket. At some intermediate point the yoke engages with recesses in the sides of the plug, while its other end has an eye through which extends the shank 28' of a wing nut 28. This wing nut is threaded on to ascrew-threaded stud 27 and is provided with 'fianges or shoulders 29 and 30 between which rests the end of the yoke 25 that has the eye. By this arrangement it will be seen that the one end of the yoke carries the wing nut 28 and can be forced in either direction by simply turning the same. lVhen it is desired to remove the plug to permit the pump to be inspected or repaired, it is simply necessary to unscrew the wing nut, by which operation the yoke acts as a lever to pull the pump from its seat, the lug 26 being the fulcrum. A substitute plug and pump can then be quickly inserted and forced firmly into the socket by screwing down the wing nut 28, the whole operation taking but a few minutes' To prevent the escape of the fluid from the reservoir while the pump plug is being removed, the upper end of the supply passage t may be located above the normal level of said fluid; or if it has to be below said level, a suitable shut-oft cock can be inserted in said passage. By the use of this specific quick detachable fastening means I provide a leverage arrangement whereby I can bring a large amount of power into play for forcing the pump into the socket and removing the same for I have the advantage of both the lever and the inclined plane of the screw.

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof;'but Idesire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

What I claim as new and desire to secure by Letters Patent of the United States, is,-

1. The combination of a reservoir containing a seat, a removable plug fitting liquidtight to the seat and carrying a pump, and a quick-deta chable fastening holding the'plug to the seat, said fastening means comprising a pivoted lever engaging with the plug for positively moving thesame in either direction, a screw-threadedstud, and a nut carried by the lever and adapted to engage the screw-threaded stud.

2. The combination of a reservoir having a tapered .seat, a plug making a liquid-tight joint therewith, a pump carried by the plug,

a yoke embracing the plug and pivoted at one end, and a wing nut carried by the other end of the yoke for securing the same in place, as described.

3. The combination of a vessel for cor taining a supply of oil, said vessel having a tapered seat in the wall thereof, a pump provided with a plug fitted tothe seat and making an oil-tight joint therewith, a yoke engaging with the plug for forcing it into and from its seat, the yoke pivoted at one end and at the other carrying a threaded nut, and a threaded stud for the nut.

In witness whereof, I have hereunto set my hand this fourteenth day of December, 1911.

KARL STEINBECKER.

lVitnesses: I

HENRY Hasrnn,

VVOLDEMAR HAUPT,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

